<template>
	<!-- 解决界面闪烁问题 等商品名字加载出来之后 再渲染 -->
	<view v-if="goods_info.goods_name">
		<!-- 轮播图区域 -->
		<swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
			<swiper-item v-for="(item,index) in goods_info.pics" :key="index">
				<image :src="item.pics_big" mode="" @click="preview(index)"></image>
			</swiper-item>
		</swiper>
		
		
		<!-- 商品信息区域 -->
		<view class="goods-info-box">
			<!-- 商品价格 -->
			<view class="price">￥{{goods_info.goods_price}}</view>
			<!-- 商品信息主题区域 -->
			<view class="goods-info-body">
				<!-- 商品名字 -->
				<view class="goods-name">{{goods_info.goods_name}}</view>
				<!-- 收藏 -->
				<view class="favi">
					<uni-icons type="star" size="16" color="gray"></uni-icons>
					<text>收藏</text>
				</view>
			</view>
			<!-- 运费 -->
			<view class="yf">快递：免运费</view>
		</view>
		
		
		<!-- rich是富文本       ：nodes可以识别html字符串 -->
		<rich-text :nodes="goods_info.goods_introduce"></rich-text>
		
		
		<!-- 商品导航组件区域 -->
		<view class="goods_nav">
			<uni-goods-nav :fill="true"  :options="options" :buttonGroup="buttonGroup"  @click="onClick" @buttonClick="buttonClick" />
		</view>
	</view>
</template>

<script>
	import {mapState,mapMutations,mapGetters} from 'vuex'
	
	export default {
		computed:{
			...mapstate('m_cart',[]),
			...mapGetters('my_cart',['total'])
		},
		watch:{
			// 这种页面刷新后 购物车右上角的小数字不会立即刷新 不会显示
			// total(newValue){
			// 	const findResult = this.options.find(x => x.text === '购物车')
			// 	if(!findResult){
			// 		findResult.info = newValue
			// 	}
			// }
			
			
			total:{
				handler(newValue){
					const findResult = this.options.find(x => x.text === '购物车')
						if(!findResult){
							findResult.info = newValue
						}
					},
				immediate:true
			}
		},
		data() {
			return {
				goods_info:[],
				
				// option全是uni组件中的复制的
				options: [, 
						{
							icon: 'shop',
							text: '店铺',
							infoBackgroundColor:'#007aff',
							infoColor:"red"
						}, {
							icon: 'cart',
							text: '购物车',
							// 购物车右上角的数字 (数量)
							info: 0
						}],
					    buttonGroup: [{
					      text: '加入购物车',
					      backgroundColor: '#ff0000',
					      color: '#fff'
					    },
					    {
					      text: '立即购买',
					      backgroundColor: '#ffa200',
					      color: '#fff'
					    }
					    ]
			};
		},
		onLoad(options) {
			// console.log(options)
			const goods_id = options.goods_id
			this.getGoodsDetail(goods_id)
		},
		methods:{
			...mapMutations('my_cart',['addToCart']),
			
			buttonClick(e){
				if(e.content.text === '加入购物车'){
					// 组织商品的信息对象
					const goods = {
						goods_id : this.goods_info.goods_id,
						goods_name : this.goods_info.goods_name,
						goods_price : this.goods_info.goods_price,
						goods_count: 1,
						goods_small_logo : this.goods_info.goods_small_logo,
						goods_state:true
					}
					// 调用addToCart()方法
					this.addToCart(goods)
				}
			},
			onClick(e){
				// console.log(e)
				if(e.content.text === '购物车'){
					uni.navigateTo({
						url:'/pages/cart/cart'
					})
				}
			},
			async getGoodsDetail(goods_id){
				const {data:res} = await uni.$http.get('api/public/v1/goods/detail',{goods_id})
				if(res.meta.status !== 200) return uni.$showMsg() 
				
				// 正则替换 因为要让图片之间有边距 所以转换成块级模块
				// 再把webp后缀名改成jpg 因为webp再ios设备支持不是很好,可能再ios设备上显示不出来
				res.message.goods_introduce = res.message.goods_introduce.replace(/<img/g,'<img style="display:block"').replace(/webp/g,'jpg')
				
				this.goods_info = res.message
			},
			// 点击轮播图图片实现大图
			preview(i){
				uni.previewImage({
					current:i,
					// 所有图片url地址的数组
					urls:this.goods_info.pics.map(x => x.pics_big)
				})
			}
		}
	}
</script>

<style lang="scss">
	// 商品详情页最上面的轮播图css
	
	// 商品信息区域css
	
	
	// 商品导航组件区域fixed固定
</style>
